Among the items in the audio/visual(1) section of Peter Cochrane's website, is a short video clip(2) of a jet achieving a sonic boom. This documented incident of the jet passing the sound barrier took place in 1999. More details here(3).
1. http://www.cochrane.org.uk/audio-and-video/index.htm
2. http://www.cochrane.org.uk/downloads/boom.mpeg
3. http://www.cochrane.org.uk/downloads/sonic.htm